For example port lang/php55 has this in Makefile DEPRECATED= EOL upstream since 10 Jul 2016 On installation by "pkg upgrade" it prints following message: ----------- This port is deprecated; you may wish to reconsider installing it: EOL\ upstream\ since\ 10\ Jul\ 2016. It is scheduled to be removed on or after 2016-08-20. ----------- All spaces are escaped by backslash. Bapt thinks it is ports bug: https://lists.freebsd.org/pipermail/freebsd-ports/2016-July/104180.html
Oh, I messed that up, sorry about that.
A commit references this bug: Author: mat Date: Tue Aug 9 14:29:05 UTC 2016 New revision: 419923 URL: https://svnweb.freebsd.org/changeset/ports/419923 Log: Don't overquote the DEPRECATED message, it ended up looking silly. Something like: ----------- This port is deprecated; you may wish to reconsider installing it: EOL\ upstream\ since\ 10\ Jul\ 2016. It is scheduled to be removed on or after 2016-08-20. ----------- PR: 211421 Reported by: Miroslav Lachman Sponsored by: Absolight Changes: head/Mk/bsd.port.mk